/ Dictionary / Index A anode glow: Meaning and Definition of Find definitions for: an'ode glow" Pronunciation: [key] — Physics. Physics. the luminous region between the positive column and the anode dark space in a vacuum tube, occurring when the pressure is low. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. anode dark space anode ray Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language